Cortana Easter Egg?

Not sure if this qualifies, but very cool feature about Cortana that I haven't seen reported before. Here's a summary.

Use Cortana to search for a flight status. My example was "Track Flight US 1994". In the search result, Cortana will show the flight status. Under the update (as you know) Cortana gives the option to "Show US 1994 Updates". Once you click to show updates, Cortana adds the flight status to the Cortana interests feed (news and so on...)

Now to the cool thing, on Cortana's live tile, the Cortana Logo changes to an airplane in the animation! Very cool. I thought.